A depreciation deduction is any deduction for depreciation or amortization or any other allowable deduction that treats a capital expenditure as a deductible expense. taxmap/pubs/p519-007.htm#en_us_publink1000222251Intangible property.(p14)Intangible property includes patents, copyrights, secret processes or formulas, goodwill, trademarks, trade names, or other like property.